El Al operates a LAX-TLV (LY106) leg twice a week during summer with a 744, the flight to LAX stops at JFK.
This summer it will be operated though by a 777 (!)
Anyway, El Al used to fly few years ago TLV-LAX non-stop!

There is a longer flight than JFK-johansberg . There is a Dubai to EWR in newyork on a a B777-200 which is very long on Malaysian airlines
infact , the flight is from kuala lampour to EWR stopping over in Dubai (MH091) malaysian airways .